An antenna to receive wireless power signals to charge a battery of an electronic device may include a first dipole antenna element disposed on a first side of a PCB. A second dipole antenna element may be disposed on the first side of the PCB, where the first and second dipole antenna elements may be configured to receive wireless RF signals at different polarizations. A third dipole antenna element may be disposed on a second side of the PCB. A fourth dipole antenna element may be disposed on the second side of the PCB, where the third and fourth dipole antenna elements may be configured to receive wireless RF signals at different polarizations. The first and third dipole antenna elements, and the second and fourth dipole antenna elements may be physically associated with one another to form respective first and second dipole antennas.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A receiver unit for receiving wireless power signals to charge a power source of an electronic device, said receiver unit comprising: a printed circuit board (PCB) having a first side and a second side; an electronic circuit mounted to the first side of the PCB, wherein the electronic circuit is positioned at a center region of the first side and includes a plurality of rectifiers; at least two first dipole antenna elements printed on the first side of the PCB, wherein at least one of the first dipole antenna elements is electrically coupled with one of the plurality of rectifiers, and a first of the at least two first dipole antenna elements has a first polarization that is different from a second polarization of a second of the at least two first dipole antenna elements; a ground plane positioned on the second side and opposite to the center region of the first side, and; at least two second dipole antenna elements printed on the second side of the PCB, wherein: each of the at least two second dipole antenna elements is electrically coupled with the ground plane, and a first of the at least two second dipole antenna elements has the first polarization and a second of the at least two second dipole antenna elements has the second polarization; the first of the at least two first dipole antenna elements and the first of the at least two second dipole antenna elements operatively form a first dipole antenna having the first polarization; and the second of the at least two first dipole antenna elements and the second of the at least two second dipole antenna elements operatively form a second dipole antenna having the second polarization, that is a different polarization from the first polarization of the first dipole antenna.
2. The receiver unit according to claim 1 , wherein the plurality of rectifiers is configured to convert wireless signals received from the first and second dipole antennas into direct current signals.
3. The receiver unit according to claim 2 , wherein the wireless signals each have a frequency that is greater than 1 GHz.
4. The receiver unit according to claim 1 , wherein the first and second polarizations are orthogonal to one another.
5. The receiver unit according to claim 1 , wherein the at least two first dipole antenna elements and the plurality of rectifiers are equal in number, and each rectifier of the plurality of rectifiers is electrically coupled with one dipole antenna element of the at least two first dipole antenna elements.
6. The receiver unit according to claim 5 , wherein a first pair of the at least two first dipole antenna elements are configured to receive wireless signals having the first polarization, and a second pair of the at least two first dipole antenna elements is configured to receive wireless signals having the second polarization, wherein the second polarization is orthogonal to the first polarization.
7. The receiver unit according to claim 5 , wherein the number is four.
8. The receiver unit according to claim 1 , wherein the at least two first dipole antenna elements each include a portion that has a first width at a first end and a second width that is greater than the first width at a second end that is electrically farthest from the electronic circuit, and wherein the at least two second dipole antenna elements each include a portion that has the first width at a first end and the second width at a second end that is electrically farthest from the electronic circuit.
9. The receiver unit according to claim 8 , wherein the PCB is substantially square, and wherein a centerline of each of the respective portions of the at least two first and second dipole antenna elements extend substantially parallel to edges of the PCB.
10. The receiver unit according to claim 9 , wherein respective second ends of the at least two first and second dipole antenna elements on the first and second sides, respectively, of the PCB point towards opposite directions.
11. The receiver unit according to claim 1 , wherein the electronic circuit is mounted to the first side of the PCB.
12. The receiver unit according to claim 11 , further comprising a substantially square conductive substrate disposed on the second side of the PCB, and wherein the at least two second dipole antenna elements extend radially outward from each of the corners of the conductive substrate.
13. The receiver unit according to claim 1 , further comprising conductive surfaces (i) extending in parallel with each side of the central region at which the electronic circuit is positioned and centered relative to the at least two first dipole antenna elements, (ii) extending outward from the central region, and (iii) between two of the at least two first dipole elements adjacently positioned to one another.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
October 13, 2015
June 25, 2019
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